Python Set difference_update() Method


Python Set difference_update() Method

  • Python Set | difference_update() The difference_update() method helps in an in-place way of differentiating the set. 

  • The previously discussed set difference() helps to find out the difference between two sets and returns a new set with the difference value, but the difference_update() updates the existing caller set.

If A and B are two sets. The set difference() method will get the (A – B) and will return a new set. The set difference_update() method modifies the existing set. If (A – B) is performed, then A gets modified into (A – B), and if (B – A) is performed, then B gets modfied into (B – A).


  • set.difference_update(set)

Parameter Values

  • set - The set to check for differences in set.



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